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Oil well drilling --- Gas well drilling

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Water well drilling --- Hydrogeology --- Boring

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$ Jet drilling --- $ Jet cutting --- $ Water jet drilling of rocks(High pressure-) --- $ 88KL --- 622.23.051 --- 622.23.054 --- 622.24.05 --- Drill bits (especially detachable bits) --- Working elements and cutting implements of mining machines --- Drilling tools. Drilling equipment. Devices for transmitting the movement --- 622.24.05 Drilling tools. Drilling equipment. Devices for transmitting the movement --- 622.23.054 Working elements and cutting implements of mining machines --- 622.23.051 Drill bits (especially detachable bits)

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Boring --- Forage --- Periodicals --- Périodiques --- Earth (Planet) --- Terre --- Crust --- Croûte --- Boring. --- Crust of the Earth. --- Earth Sciences --- Geology --- geology --- ocean drilling --- marine geophysics --- seabed sampling --- borehole observatories --- geophysical logging --- Diamond drilling --- Test boring --- Well-boring --- Hydraulic engineering --- Mining engineering --- Shaft sinking --- Earth --- Geology. Earth sciences --- Crust of the Earth --- Crusts of the planets --- Planetary crusts --- Planets --- Crust.

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Cryptoexplosion structures --- Geology, Structural --- Geology, Stratigraphic --- Drill core analysis --- Tertiary Period --- Quaternary Period --- Analysis of drill cores --- Core sampling --- Core drilling --- Drill cores --- Craters, Crypto-explosion --- Crypto-explosion craters --- Cryptoexplosive structures --- Cryptovolcanic structures --- Structures, Cryptoexplosion --- Geotectonics --- Structural geology --- Tectonics (Geology) --- Physical geology --- Cryptoexplosion structures - Chesapeake Bay (Md. and Va.) --- Geology, Structural - Virginia. --- Geology, Stratigraphic - Tertiary. --- Geology, Stratigraphic - Quaternary.